Correlation leg length discrepancy and patellofemoral dysfunction

Carlson M, Wilkerson J. 
Are differences in leg length predictive of lateral patellofemoral pain? 
Physiother Res Int. March 2007; Vol.12(1): 29-38.

The PALM method of indirect measurement of leg length differences overall correctly classified approximately 83 % of the participants. Tape measure to medial and lateral malleoli as well as Q angle did not yield significant results. CONCLUSION: The results suggested that the PALM method of measuring leg length differences may have clinical utility in differentiating between patients who are likely to sustain patellofemoral pain syndrome and those who will not.